The alloy 33NK (33NK-VI)

Designation

Name The value
Designation GOST Cyrillic 33НК
Designation GOST Latin 33HK
Transliteration 33NK
By chemical elements 33Ni
Name The value
Designation GOST Cyrillic 33НК-ВИ
Designation GOST Latin 33HK-BI
Transliteration 33NK-VI
By chemical elements 33NiCo-ВIr

Description

33NK alloy used: for connections with ceramics, mica and glass brand С72−4.

Note

Alloy with an average value of CTE.
Alloy with a CTE (6,0−9,0)·10-6 deg-1 in the temperature range from -70 to + 470 °C.
The grades 33NK, 33NK-VI are not allowed to use in the newly created and upgraded technology with 01.01.91.

Standards

Name Code Standards
Classification, nomenclature and General rules В30 GOST 10994-74
Tape В34 GOST 14080-78
Wire, steel, alloy В73 GOST 14081-78
Bars and shapes В32 GOST 14082-78, TU 14-11-245-88

Chemical composition

Standard C S P Mn Si Ni Fe Co
GOST 10994-74 ≤0.05 ≤0.015 ≤0.015 ≤0.4 ≤0.3 32.5-33.5 Rest 16.5-17.5
Fe is the basis.

Mechanical properties

Section, mm σU, MPa
Cold-rolled steel strip according to GOST 14080-78 on delivery
0.1-2.5 ≤930

Description mechanical marks

Name Description
σU Limit short-term strength

Physical characteristics

Temperature r, kg/m3 a, 10-6 1/°C
20 8200 -
-100 - 83
-80 - 83
-60 - 82
-40 - 81
-20 - 79
100 - 83
200 - 82
300 - 78
400 - 76
500 - 78
600 - 90
700 - 101
800 - 109

A description of the physical symbols

Name Description
Е The normal elasticity modulus
l Coefficient of thermal conductivity

Technological properties

Name The value
The temperature of the inflection point ≥470 °C